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Heavy weight concrete composition using slag byproducts

a technology of heavy weight concrete and byproducts, applied in the direction of sustainable waste treatment, solid waste management, transportation, etc., can solve the problems of serious environmental problems, efforts to develop the use and application, etc., and achieve excellent mechanical properties, reduce carbon dioxide emission, and preserve the environment and recycling resources.

Active Publication Date: 2012-07-17
KOREA RAILROAD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This solution effectively reduces carbon dioxide emissions, conserves natural resources, and provides superior mechanical properties, making the concrete composition more environmentally friendly and economically efficient by replacing significant amounts of cement and natural sand with industrial byproducts.

Problems solved by technology

Since efforts to develop the use and application of the byproducts have been insufficient in light of the quantity of production, the byproducts are for the most part reclaimed or left behind in in-house sites.
As a result, a serious environmental problem has been raised.

Method used

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Examples

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Embodiment Construction

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[0083]Hereinafter, the present invention will be described below in greater detail by means of examples and comparative examples. The present invention should not be construed as limited to the examples set forth herein. For the convenience of description, a heavyweight concrete composition using an ASS byproduct and a heavyweight concrete composition using a slow-cooled electric-arc-furnace oxidizing slag byproduct are discriminated from each other.

[0084][Heavyweight Concrete Composition Using Atomized Steel Slag Byproduct]

[0085]1. Preparation of Materials

[0086](A) Cement

[0087]The cement used for testing was third class (high-early-strength) cement in accordance with KS L 5201 (Portland cement).

[0088](B) Ground Granulated Blast-Furnace Slag

[0089]Type III ground granulated blast-furnace slag having a standardized fineness (specific surface area) of 4000 to 6000 cm2 / g in accordance with KS F 2563 (ground granulated blast-furnace slag for use in concrete) was used.

[0090](C) Sand

[0091...

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Abstract

Disclosed is a heavyweight concrete composition using slag byproducts, including: ground granulated blast furnace slag; slow-cooled electric-arc-furnace oxidizing slag or atomized steel slag used as a fine aggregate; a coarse aggregate; water; and a chemical admixture based on 100 parts by weight high-early-strength cement. Thus, the heavyweight concrete composition contains a large quantity of steel slag and blast-furnace slag that are byproducts in iron-making and steel-making processes, thereby remarkably reducing an amount of emission of carbon dioxide and maximizing the recycling of waste resources for preserving the natural environment. As a result, an eco-friendly heavyweight concrete product can be made.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a 371 of international application of PCT application serial no. PCT / KR2010 / 006659, filed on Sep. 30, 2010, which claims the priority benefit of Korea Application No. 10-2009-0093901, filed on Oct. 1, 2009, and claims the priority benefit of Korean Application No. 10-2010-0094051, filed on Sep. 29, 2010. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.TECHNICAL FIELD[0002]The present invention relates to a heavyweight concrete composition using slag produced as a byproduct in the steel industry, and more particularly, to a heavyweight concrete composition using slag byproducts, in which the slag byproducts (steel slag and blast-furnace slag) are efficiently used as fine aggregates for concrete and binders for an alternative to cement so as to be eco-friendly and excellent in mechanical properties such as a compressive streng...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C04B18/14C04B24/06E01B3/28
CPCC04B28/04E01B3/28C04B18/141C04B18/142C04B28/082C04B2111/0031Y02W30/91C04B7/02
Inventor KOH, TAE HOONHAN, SEONG HOHWANG, SEON KEUNKO, TAE HWAN
Owner KOREA RAILROAD RES INST
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